Burglar-alarm screen.



P. ORANGE.

BURGLAR ALARM SCREEN.

APPLICATION FILED AUG. 4, 1908.

943,368, Patented Dec. 14, 1909.

L 1 Eng 5 5i l'\(@ Ill/l 5 WITNESSES: 6 INVENTOR UNITED STATES PTEN TOFFICE.

rn'rnnoannon, or NEWARK, ivnw JERSEY.

BUBGLAB-ALARM SCREEN.

Specification of Letters Patent.

To all whom it may concern: Be it known that I, PETER ORANGE, asubect'of the Czar of Russia, residing at Newark, in the county of Essexand State of.

New Jersey, have invented certain new and useful improvements inBurglar-Alarm Screens; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being bad to the accompanying drawings, and to figuresof reference marked .thereon, which form a part of this specification.

This invention relates to a screen or shade that combines, with itsscreening or shading properties, a system for detecting an entrance orattempted entrance through the screen, thereby serving as a burglaralarm.

The-device is intended to be used in winwhich is particularly desirablein stores,

such as butcher shops, delicatessen stores,

restaurants and so forth. The screen permits a circulation of air, andat the same time acts as a burglar alarm when tampered with.

he invention is illustrated in the accompanying drawing, in which Figure1 is a diagrammatic view with the screen portion of the device removed,and

Fig. 2 is a view of a modification, but showing'the screen in full.

I-preferably secure-the screen into a roller or a tube 10 suitably lacedat or near the of a'window or oor-frame and rotato table in bearingssuch as 11 in Fig. 1, and being provided with a slot 12 through whichextend theparallel wires 13. Each wire is secured to an end 14 of levers15 mounted as at 16 in the roller 10. he other ends of the wires 13 aresecured to the ends 17 of the levers 18 pivoted, as at 19, to a strip 20forming the bottom edge of the screen ori curta'in. Springs 21,underneath ivotally the levers 18 and the levers 15, tend to hold thewires 13 taut, and the wires are cut of a length so as to hold thelevers 18 and the levers 15 substantially parallel with each other andalso with the axis of the roller 10. When for any reason, throughaccident or design, any of the wires 13 are cut or b oken,

the lever 15 to whichthey are attac ed is released and the sprin 21acts't-o throw the lever 15 with one end in'contact with a post 22, andits other end in contact with apost 23, a pair of these posts beingsupplied for each lever, and since the posts 22-are connected with awire 2 1 and the posts 23 are connected to a. wire 25, the circuit isclosed passing through these wires 24: and thereby operating a signalsuch as a bel. or other audible signal 26, placed in a circuit with abattery or other source of power 27. The roller-'10 can be springactuated so as to have a tendency to roll up and thus hold the wirestaut.

The strip 20, at the bottom of the screen, is held down by having thespring latch 28 engage the casing 29 of the lock, and when it is desiredto raise the screen, the arm 30 is o erated by means of the cord 31 andthe finger-piece 32 so as to throw the latch 28 back and permit theraising of the roller by means of a suit-able handle or key placed onthe shaft 33 ofa gear 34, which gear in turn operates a gear 35 on theshaft 36, and this in turn transmits the motion to the gears 37, thusactingto roll up the roller 10. 'When it is desired to ull down theblind or screen, a key .or hen 1e is inserted on the shaft 38 and thegear wheels 39 and 4.0 act to roll up a reel 41 which in turn pulls therope 12 and the cords 43' and 14 which pass over the pulleys df, and-46, respectively, pulling down on the strip 20 on each end so that itrides easily down through the door or window-frame and becomes locked.To.- prevent' undue side strain on the strip 20,

Patented Dec 14, 1909.

in shade or similar rollers as at present constructed. The wires 13 areconcealed in the screen itself, if desired. I illustrate in Fig. 2 thecircuit wires 24 and 25 which are connected inside the roller 10 thesame as illustrated in Fig. 1, but instead of having a simple connectionwith an audible signal,.

.ing of a light constantly in a place of business to prevent burglary,since an attempted entrance by severing the wires 13 will cause anillumination of the store or building, and thus defeat the purposes ofthe attempted entrance.

I have illustrated a screen as being used in a structure, but it will beunderstood that I may employ shades or curtains or similar structures.to cover the wires 13, or the wires can be used alone.

Having thus described my invention, what I claim is 1. An alarm screencomprising a roll or the like having levers therein, Wires having theirends secured to the ends of the levers, a strip having means therein for securing the other ends of the wires, an electric circuit having asignal therein, contacts in the circuit adapted to make the circuit bymeans of the levers when a Wire is-broken, and means connected with thelevers for maintaining them in normal position to cause the wires to beunder a constant tension.

2. An alarm screen comprising a roll having a series of levers therein,electrical contacts opposite the ends of the levers means for tiltingthe levers, an electric circuit connecting the contacts with a signal,the levers when tiltedcausing a closing of the circuit between thecontacts, a series of wires having their ends connected to the ends ofthe levers to keep the levers from the 'contacts, a movable strip towhich the free ends of the wires are connected, means for rotating theroll, and means for locking the strip in its extended position when thewires are taut.

3. An alarm screen comprising a roll hav-' ing a series of leverstherein meansfor tilting the levers, electrical contacts opposite theends of the levers, an electric circuit con-. necting the contacts witha signal, the levers when tilted causing a'closing of, the circuitbetween the contacts, a series of wires having their ends connected tothe ends of the levers to keep the levers from the contacts, a movablestrip to which the free ends of the wires are connected, means forrotating'the roll, means for locking the strip in its extended positionwhen the Wires are taut, and means for releasing the latch to allow thestrip to move toward the roll when the roll is rotated.

In testimony, that I claim the fore oing, I have hereunto set my handthis 9th day of July 1908.

. PETER ORANGE. Witnesses.

WM. H. CAMFIELD, E. A. Penn.

